# Copyright 2022 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
""" Video Dataset Generator. """

import imageio.v3 as iio


class VideoDatasetGenerator:
    """ Dataset generator for getting video path and its corresponding label. """

    def __init__(self, path, label, mode=None):
        self.path = path
        self.label = label
        self.mode = mode

    def __getitem__(self, item):
        """Get the video and label for each item."""
        with open(self.path[item], 'rb')as rf:
            content = rf.read()
        video = iio.imread(content, index=None, format_hint=".avi")
        label = self.label[item]
        return video, label

    def __len__(self):
        """Get the the size of dataset."""
        return len(self.path)
